R8152x

NO. EC-238-180730

8

TYPICAL APPLICATION

C1

R8152x

Series

VDD

VOUT

CE

GND

C2

C1 = Ceramic 0.47 µF

C2 = Ceramic 10 µF

VOUT

CE Control

External Parts Example:

Symbol

Recommended Value

Parts Name

Manufacturer

Model Number

C2 (COUT)

10 µF

Ceramic Capacitor

MURATA

GRM32DB31E106K (Size: 3225)

TECHNICAL NOTES

When using R8152x, please consider the following points.

Phase Compensation

In R8152x, phase compensation is provided to secure stable operation even when the load current is

varied. For this purpose, please make sure to use a C2 capacitor.

In case of using a tantalum type capacitor and the ESR (Equivalent Series Resistance) value of the

capacitor is large, the output might be unstable. Evaluate the circuit including consideration of frequency

characteristics.

Depending on the capacitor size, manufacturer, and part number, the bias characteristics and temperature

characteristics are different. Evaluate the circuit taking actual characteristics into account.

PCB Layout and GND Wiring

Ensure the VDD and GND lines are sufficiently robust. If their impedance is too high, noise pickup or

unstable operation may result. Connect a C1 capacitor with 0.47 µF or more value between the VDD and GND

pins, and as close as possible to the pins.

Likewise, connect a C2 capacitor with suitable values between the VOUT and GND pins, and as close as

possible to the pins (Please refer to the Typical Application above).

In the case of using HSOP-6J package, please make sure to wire No. 2, No. 3, and No. 5 pins to the GND

plane. Also, in the case of using TO-252-5-P2 package, please make sure to wire No. 2 and No. 3 pins to the

GND plane.